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x-goog-spanner-request-id: for DatabaseClientImpl and all session users, infer channelId #3899

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#3900
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x-goog-spanner-request-id: for DatabaseClientImpl and all session users, infer channelId#3899
#3900
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rahul2393
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api: spannerIssues related to the googleapis/java-spanner API.
@odeke-em

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@odeke-em
odeke-em
opened on Jun 3, 2025

We have a bunch of TODOs to infer the channelId and to add them in we shall need to infer the channelId from both SpannerRpc.Option.CHANNEL_HINT and spanner.getOptions().getNumChannels() like we do here

java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/SessionPool.java

Lines 1655 to 1660 in 53bc510

int getChannel() {
Long channelHint = (Long) delegate.getOptions().get(SpannerRpc.Option.CHANNEL_HINT);
return channelHint == null
? 0
: (int) (channelHint % sessionClient.getSpanner().getOptions().getNumChannels());
}

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